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Finding the Fourth Proportional to 61,484.20, 92,236.80 and 28,207.11

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Solution

The fourth proportional to 61,484.20, 92,236.80 and 28,207.11 is: 42,315.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,484.20 : 92,236.80 = 28,207.11 : x
  2. Step 2: Convert to fraction form
    61,484.20/92,236.80 = 28,207.11/x
  3. Step 3: Cross multiply
    61,484.20x = 92,236.80 × 28,207.11
  4. Step 4: Simplify right side
    61,484.20x = 2,601,733,563.65
  5. Step 5: Solve for x
    x = 2,601,733,563.65/61,484.20
  6. Step 6: Final answer
    x = 42,315.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.